package pers.fulsun.demo.springcloud.utils;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

@Component
public class SpringUtil implements ApplicationContextAware {
    protected static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (SpringUtil.applicationContext == null) {
            SpringUtil.applicationContext = applicationContext;
        }
        System.out.println("========ApplicationContext配置成功,在普通类可以通过调用SpringUtil.getAppContext()获取applicationContext对象,applicationContext=" + SpringUtil.applicationContext + "========");

    }


    //获取applicationContext
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    public static Object getBeanByName(String beanName) {
        if(getApplicationContext().containsBeanDefinition(beanName)){
            return getApplicationContext().getBean(beanName);
        }
        return null;
    }

}
